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Proceedings Paper

Polarization analyses of readout signals in phase change material incorporating a solid immersion lens (SIL)
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Paper Abstract

Comprehensive analyses based on rigorous vector diffraction theory have been presented to simulate the readout signal contrast using SIL in reading phase change recording disk. De-polarized reflected light (y-polarized from x-polarized incident beam) results in the reduction of total signal contrast, and becomes more obvious for high numerical aperture systems. Due to the signal degradation from de- polarized reflected light, filtering de-polarized light is applied to signal detection. The x-polarized contrast is a factor 1.0 to 1.35 higher than the conventional detection contrast (x+y polarized) at different gap widths, at a cost of 0 to 25 percent total intensity reduction.

Paper Details

Date Published: 6 July 2000
PDF: 8 pages
Proc. SPIE 4081, Optical Storage and Optical Information Processing, (6 July 2000); doi: 10.1117/12.390502
Show Author Affiliations
Chung-Hao Tien, National Chiao Tung Univ. (United States)
YinChieh Lai, National Chiao Tung Univ. (Taiwan)
Han-Ping D. Shieh, National Chiao Tung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 4081:
Optical Storage and Optical Information Processing
Han-Ping D. Shieh; Tomas D. Milster, Editor(s)

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